Carrier Aquazone 50PSW025-420 Installation Instructions Manual

Water-to-water source heat pump with puron refrigerant (r-410a)

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CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . 2

Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 2

• INSPECTION

• INSPECT UNIT

• PROTECTION

Step 3 — Locate Unit . . . . . . . . . . . . . . . . . . . . . . . . . 3

Step 4 — Mount Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Step 5 — Connect Piping . . . . . . . . . . . . . . . . . . . . . . 7

• WATER SUPPLY AND QUALITY

• INSTALLATION OF HOT WATER GENERATOR

OPTION (ONLY 025-71 SIZES)

• TYPICAL HOT WATER GENERATOR INSTALLATION

• COOLING TOWER/BOILER APPLICATION

• WELL WATER SYSTEMS

• EARTH COUPLED GEOTHERMAL SYSTEMS

Step 6 — Wire Field Power Supply . . . . . . . . . . . . . 11

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Wire Control Connections . . . . . . . . . . . . . . . . . . . . 21

• COMPLETE C AND DELUXE D CONTROL

• AUXILIARY RELAY (DELUXE D ONLY)

• ENERGY MANAGEMENT SWITCH (DELUXE D

ONLY)

• PHASE MONITOR

• ALARM OUTPUT

• W2W OPEN CONTROL

• CONTROL TRANSFORMER

Configure Unit Control Components . . . . . . . . . . . 21

• UPM CONFIGURATION

• UPM FEATURES

• CONSIDERATIONS

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

• ENVIRONMENT

• POWER SUPPLY

Scroll Compressor Rotation . . . . . . . . . . . . . . . . . . 24

Cleaning and Flushing . . . . . . . . . . . . . . . . . . . . . . . 25

Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

• FREEZE PROTECTION

System Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

• FLOW VERIFICATION

• FLOW REGULATION

Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . 26

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500382-01

Installation, Start-Up, and

Service Instructions

Printed in U.S.A.

Form No. 50PSW-5SI

Water-to-Water Source Heat Pump

with Puron

Ground Coupled, Closed Loop and Plateframe Heat

Exchanger Well Systems . . . . . . . . . . . . . . . . . . .26

Page

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Unit Protection Model (UPM) . . . . . . . . . . . . . . . . . .28

Units with Complete C or Deluxe Controls . . . . . . .28

• COOLING MODE

• HEATING MODE

Units with W2W Open Controls . . . . . . . . . . . . . . . .28

SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . .28

WSHP Open W2W . . . . . . . . . . . . . . . . . . . . . . . . . . .28

• OCCUPANCY

• BAS (BUILDING AUTOMATION SYSTEM) ON/OFF

• REMOTE OCCUPANCY CONTACT

• SHUTDOWN

• POWER FAIL RESTART DELAY

• CHANGEOVER TIMEGUARD

• LOAD PUMP

• SOURCE WATER ISOLATION VALVE/SOURCE

WATER PUMP OUTPUT

• COOLING (SINGLE MODULE)

• ADDITIONAL COOLING FUNCTIONS

• COOLING CONTROL MODES

• HEATING (SINGLE MODULE)

• ADDITIONAL HEATING FUNCTIONS

• HEATING CONTROL MODES

• MUTLI-UNIT PRIMARY

• EQUIPMENT ALARM

• SERVICE TEST

Configuring Multiple W2W WSHP for 

MS/TP Operation . . . . . . . . . . . . . . . . . . . . . . . . . .35

• W2W PRIMARY CONFIGURATION PARAMETERS

• W2W SECONDARY CONFIGURATION

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Refrigerant System . . . . . . . . . . . . . . . . . . . . . . . . . .37

Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . .37

• GRAVITY FLOW METHOD

• FORCED CIRCULATION METHOD

Checking System Charge . . . . . . . . . . . . . . . . . . . . .38

Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . . .38

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . .38

50PSW START-UP CHECKLIST . . . . . . . . . . . . .

IMPORTANT: Read the entire instruction manual before

starting installation.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be

hazardous due to system pressure and electrical components. Only

Pg 1

Aquazone

50PSW025-420

Refrigerant (R-410A)

5-23

Replaces: 50PSW-4SI

™

CL-1

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Summary of Contents for Carrier Aquazone 50PSW025-420

Page 1 ™ Aquazone 50PSW025-420 Water-to-Water Source Heat Pump ® with Puron Refrigerant (R-410A) Installation, Start-Up, and Service Instructions CONTENTS Ground Coupled, Closed Loop and Plateframe Heat Exchanger Well Systems ....26 Page OPERATION .
Page 2: Installation
Understand the signal words — DANGER, WARNING, and accordance with Carrier’s recommended service clearances and CAUTION. DANGER identifies the most serious hazards which installation instructions. Please refer to the Carrier Commercial will result in severe personal injury or death. WARNING signifies WSHP Warranty Statement (document number 04-570008-01) hazards that could result in personal injury or death.
Page 3: Step 3 - Locate Unit
Be sure the location chosen for unit installation provides be capped. This precaution is especially important in areas where painting, plastering, or spraying of fireproof material, etc., is not ambient temperatures maintained above freezing. Well water yet complete. Foreign material that is allowed to accumulate applications are especially susceptible to freezing.
Page 4 Optional Special Unit Mounted Unit Front Left Side Controller Source Load Outlet Outlet 24.0 HRP Outlet HRP Inlet Electrical Knockouts Source Inlet 24.0 32.5 Load Inlet DIMENSIONS (INCHES) UNIT FIELD SIZE CONN. CONN. 2.20 1.70 13.20 1.70 3.75 1.50 14.25 1.95 7.15 11.00...
Page 5 Electrical Connections Unit Rear Left Side Front Left Side Electrical Connections Source Out Load Out Source In Load In DIMENSIONS (INCHES) WATER UNIT CONN. SIZE (FPT) 43.5 24.5 10.5 48.5 19.5 29.25 17.5 43.5 24.5 10.5 48.5 23.5 29.25 17.5 43.5 24.5 10.5...
Page 6 Sizes 025 thru 071 (Top View) No access panels are located on this side. Source Side Load Side l a i l a i and bottom and bottom No access is No access is required on this required on this side.
Page 7: Step 4 - Mount Unit
Carrier Always check carefully for water leaks and repair appropriately. recommends proper testing to assure the well water quality is Units are equipped with female pipe thread fittings.
Page 8 WATER SUPPLY AND QUALITY Purge all air from HWG by depressing the Schrader valve on the HR unit. Allow all air to bleed out until water appears at Check water supply. Water supply should be plentiful and of good the valve. quality.
Page 9: Earth Coupled Geothermal Systems
Avoid using low voltage (24 volt) solenoids, using them may EARTH COUPLED GEOTHERMAL SYSTEMS overload the unit transformer or interfere with the lock-out cir- Closed loop and pond applications require specialized design cuit. Line voltage solenoids connected across the load side (T1, knowledge.
Page 10 Table 3 — Water Quality Guidelines CLOSED CONDITION OPEN LOOP AND RECIRCULATING WELL MATERIAL RECIRCULATING Scaling Potential — Primary Measurement Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below. pH/Calcium Hardness Method pH <...
Page 11 All field wiring must comply with local and national fire, safety Step 6 — Wire Field Power Supply and electrical codes. Power to the unit must be within the operating voltage range indicated on the unit’s nameplate. On WARNING three phase units, phases must be balanced within 2%. Properly sized fuse or HACR (heating, air-conditioning, and To avoid possible injury or death due to electrical shock, open refrigeration) circuit breakers must be installed for branch circuit...
Page 12 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT LOAD FREEZE CONDITION Fig. 7 — Unit Sizes 025-071, 1-Phase, Complete C/Deluxe D Control Package...
Page 13 Fig. 8 — Unit Size 122,1-Phase, Complete C/ Deluxe D Control Package...
Page 14 HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT LOAD FREEZE CONDITION Fig. 9 — Unit Sizes 025-071, 1-Phase, W2W Open Control Package...
Page 15 Fig. 10 — Unit Sizes 122, 1-Phase, W2W Open Control Package...
Page 16 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION NOTES SEE UNIT NAME PLATE FOR ELECTRICAL RATING. ALL FIELD WIRING MUST BE IN ACCORDANCE WITH N.E.C.-N.F.P.A. #70, COPPER CONDUCTORS ONLY.
Page 17 Fig. 12 — Unit Size 122, 240-420; 3-Phase Complete C/Deluxe D Control Package...
Page 18 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION Fig. 13 — Unit Size 025-071, 180, 210; 3-Phase W2W Open Control Package...
Page 19 Fig. 14 — Unit Size 122, 240-420; 3-Phase W2W Open Control Package...
Page 20 UNIT TERMINAL BLOCK CLASS II VOLTAGE FACTORY WIRED COMPONENTS J1-9 CAN BE USED TO CONNECT WATER FLOW SWITCH, FIRE ALARM FIELD WIRED COMPONENTS AND/OR PHASE MONITOR OPTIONS CMR 2 CONNECTOR WILL BE INCLUDED ON ALL W2W HARNESSES BUT STANDARD COMPONENTS: ONLY NEEDS TO BE CONNECTED TO CMR2 ON TWO STAGE UNITS THAT HAVE 2 CMR'S.
Page 21: Pre-Start-Up
See the applicable wiring diagrams within this document Transformer switched to lower voltage tap if necessary. for details. For further instructions on W2W Open, please visit HVACPartners.com or Carrier.com for the W2W Open 10. Service/access panels are in place. Integration Guide and Points/Properties Guide.
Page 22 NUMBER ITEM Power LED Indicator Status LED Indicator NUMBER ITEM Source Freeze 1 Protection Temperature Selection (R17) Board Power Indicator Load Freeze 2 Protection Temperature Selection (R77) UPM Status LED Indicator UPM II Board Settings Water Source Coil Freeze Protection Temperature Freeze Connection (Freeze 1) Selection (R30) Load Coax Freeze Connection (Freeze 2)
Page 23: Unit Start-Up
Carrier recommends the following guidelines for wiring large electrical spike. between a thermostat and the unit: 18 GA up to 60 ft, 16 GA up to 100 ft and 14 GA up to 140 ft.
Page 24 Table 6 — Cooling Mode Operating Pressure (psig) ENTERING SOURCE CONDENSER TEMPERATURE (°F) ENTERING LOAD/ 75°F 85°F 95°F EVAP TEMP (°F) SUCTION DISCHARGE SUCTION DISCHARGE SUCTION DISCHARGE PRESSURE PRESSURE PRESSURE PRESSURE PRESSURE PRESSURE 99-116 290-320 107-123 325-358 107-123 370-400 91-107 265-311 91-107 303-350...
Page 25: Cleaning And Flushing
Cleaning and Flushing Antifreeze Cleaning and flushing of the piping system is the single most In areas where entering loop temperatures drop below 40°F or important step to ensure proper start-up and continued efficient where piping will be routed through areas subject to freezing, operation of the system.
Page 26: System Flow
Verify that the water flow control cartridge matches the System Flow application flow requirement. (See Fig. 19 and 20.) FLOW VERIFICATION Cooling Tower/Boiler Systems The 50PSW WSHP units do not include a factory flow switch as These systems typically use a common loop maintained at 60°F to standard.
Page 27 Water Side Pressure Drop - 50PSW025-071 50PS PSW071 50PS PSW035 50PS PSW049 50PS PSW061 50PS PSW025 LEGEND Load Side (55F) Source Side (85F) 50PSW025 Load Side 50PSW025 Source Side 50PSW035 Load Side 50PSW035 Source Side 50PSW049 Load Side 50PSW049 Source Side 50PSW061 Load Side 50PSW061 Source Side 50PSW071 Load Side...
Page 28: Operation
written by the third-party device to set the controls occupied state OPERATION as required. This method of occupancy determination takes Power Up Mode precedence over all others. No special configuration is necessary to utilize this function. Object address information is also The unit will not operate until all the inputs, terminals and safety described in the W2W Integration Guide.
Page 29 The Iso Valve Close Delay default value is 45 seconds and may be The following conditions must be true in order for the Cooling adjusted between 0 and 180. NOTE: On a request for unit Setpoint OA Reset algorithm to run: shutdown (described previously), the valve will remain open until •...
Page 30 The following conditions must be true in order for the cooling • The Changeover time guard has elapsed. algorithm to run in the OAT control mode: • Load water temp is above the Chilled Water Supply • A valid Outdoor Air Temperature is present. Setpoint.
Page 31 The following conditions must be true in order for the Heating (hardware or network) is required for this mode. Once enabled, Setpoint OA Reset algorithm to run: equipment control is as described for heating and cooling. • preconditions heating operation (described When conditions require heating, the module will operate as previously) have been met.
Page 32: Service Test
MUTLI-UNIT PRIMARY operator. See the Equipment Alarm configuration section for configuration instructions related to Equipment Alarm. On installations having multiple Water to Water Source Heat Pumps serving a common load, the heat pumps may be controlled SERVICE TEST as a singular heating or cooling source utilizing the Multi-unit The W2W provides a built in Service Test function to allow the MS/TP Operating Mode.
Page 33 Fig. 21 — W2W Open Control Board...
Page 34 Fig. 22 — Unit Protection Module (UPM) Sequence Of Operation...
Page 35 Configuring Multiple W2W WSHP for  Control Mode Selection MS/TP Operation For two pipe systems Manual Heat or Manual/Cool, four pipe systems SPT, OAT, or System T1Temp On installations having multiple Water-to-Water Source Heat Pumps serving a common load, the heat pumps may be controlled Refrigerant Circuits as a singular heating or cooling source utilizing the Multi-unit Configure for the correct number of refrigerant circuits in the unit...
Page 36 Fig. 23 — W2W Primary Configuration Parameters - Unit Configurations Fig. 24 — W2W Primary Configuration Parameters - Setpoints Fig. 25 — W2W Primary Configuration Parameter - Service Configuration...
Page 37: Gravity Flow Method
Proper water treatment can minimize tube fouling and pitting. If Tank such conditions are anticipated, water treatment analysis is Remove Wa ter Regulating Va lve recommended. Refer to the Carrier System Design Manual, Part 5, for general water conditioning information. Return Fine Mesh Screen CAUTION Fig.
Page 38: Checking System Charge
Checking System Charge Refrigerant Charging Units are shipped with full operating charge. If recharging is necessary: WARNING Insert thermometer bulb in insulating rubber sleeve on liquid To prevent personal injury, wear safety glasses and gloves line near filter drier. Use a digital thermometer for all when handling refrigerant.
Page 39 Table 12 — Troubleshooting FAULT POSSIBLE CAUSE SOLUTION Power Supply Off Apply power, close disconnect. Blown Fuse Replace fuse or reset circuit breaker. Check for correct fuses. Replace or tighten the wires. Check for loose or broken wires at compressor, capacitor, or Broken or Loose Wires contactor..
Page 40 8733837615 © 2023 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500382-01 Printed in U.S.A. Form No. 50PSW-5SI Pg 40 5-23 Replaces: 50PSW-4SI...
Page 41: 50Psw Start-Up Checklist
50PSW START-UP CHECKLIST NOTE: To avoid injury to personnel and damage to equipment or prop- erty when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation, Start-Up and Service Instructions.
Page 42 TEMPERATURES FILL IN THE ANALYSIS CHART ATTACHED. COAXIAL HEAT COOLING CYCLE: EXCHANGER FLUID IN FLUID OUT FLOW HEATING CYCLE: FLUID IN FLUID OUT FLOW AIR COIL COOLING CYCLE: AIR IN AIR OUT HEATING CYCLE: AIR IN AIR OUT HEATING AND COOLING CYCLE ANALYSIS HEATING POSITION COOLING POSITION WATER-TO-WATER UNITS...
Page 43 HEAT OF EXTRACTION (ABSORPTION) OR HEAT OF REJECTION =  FLOW RATE (GPM) x TEMP. DIFF. (DEG. F) x FLUID FACTOR* = (Btu/hr) SUPERHEAT = SUCTION TEMPERATURE – SUCTION SATURATION TEMPERATURE (DEG F) SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE (DEG F) *Use 500 for water, 485 for antifreeze.
Page 44 8733837615 © 2023 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500382-01 Printed in U.S.A. Form No. 50PSW-5SI Pg CL-4 5-23 Replaces: 50PSW-4SI...

Carrier Aquazone 50PSW025-420 Installation Instructions Manual

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